Electric clock



(No Model.) l r 2 Sheeats--Sheet 1.

I'. BAUMAN.

, ELBGTRIG CLOCK.. No. 320,997. PatentedJune so, 1885.

NA PETERS. FhemLlhogmphnr, Wzlhington, D4 C.

(No Model.) Y 2 Sheets-,Sheet 2.

F. BAUMAN.

. ELECTRIC CLOCK. N0. 320,997. Patented June 30, 1885.

WITNESSES 6"e N. PEIEHS, PhoeoLilhognphan wamingmn, D. c.

ilNrTED STATES PATENT OrmeaO FERDINAND BAUMAN, OF WALDENBURG, SVITZERLAND.

ELECTRIC-CLOCK.

SPECIFICATION forming part of Letters Patent No. 320,997l dated June 30, 1885,

Application led December 12, 1883. (No model.)

To all whom. it may concern:

Be it known that I, ylnnnrrmm) BAUMAN, of ValdeDburg, in the Canton of Basel Land, Switzerland, have invented certain new and usefullmprovements in Electric Clocks 5 and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specication.

My invention relates to improvements in electric clocks, and comprises in its main ea* tures operating-works, a lever with weight, the armature, and the electro-magnet, all as hereinafter described.

In the drawings, Figure 1 represents arear elevation of my improved clock; Fig. 2, an enlarged rear view in elevation,withaportion of the back plate broken away the better to display the works; Fig. 3, an end view oi' the clock, and Fig. 4 is a face view of part of the mechanism for operating the striking attachment. Fig. 5 is a top view of part of the actuatingmagnet.

The wheels are arranged between two plates, l and 2.

The operating-works, which measure the time,count the number of vibrations,and regulate the action of the striking-works, consist of a large main wheel, 4, ratchet-wheel 10, and the pawl 38. rlhe wheels 4 and l() are carried by the same arbor; but the ratchet-wheel l() is loose on said arbor, while the wheel 4 is fast on the arbor. The arbor of the main wheel 4 may carry the squared tube 5, which is to support the minute-hand. The minute-wheel 6 is mounted upon this tube 5, and is placed on the outer face of the front plate, l, and drives a pinion, 7, having as many teeth as wheel 6, which carries a pinion, 8, that drives the hour-wheel g. The tubular arbor of the hour-wheel 9 is to carry the hour-hand. On the rim of the ratchetwheel 10 is a pin, 11, which at times bears against one of a series of flexible arms, 12, that project from the arbor of the main wheel 4. Theminute-wheel ofthe clock is turned by an electric attachment, which attachment may also operate the striking part of the clock. I need, however, not

explain the details of the striking mechanism, as that may be of any suitable character. The striking-works, if connected to the clock, are moved by a winding-wheel, 15, which meshes with the minute-wheel 6, and is driven by the latter and winds up the strikingspring-that is to say,the minutewheel,when turned, serves to keep the striking-spring wound up.

33 is a weighted lever, pivoted to the frame of the clock at 34, and carrying an armature, 36, at one end. 37 is the adjustable weight for balancing said lever. The lever 33 carries also the pawl 38, which engages with the ratchet-wheel l0. A spring, 3825, keeps the pawl 38 in proper engagement with the ratchet-wheel.

39 is a metal bar attached to the lever 33, said bar having a projecting arm, 55, for contact with a spring, 50, as hereinafter described.

44 is an electromagnet, which is carried by the frame of the clock, in alignment with the armature 36, and which connectsby a wire, a, with the battery and by a wire, 45, with the metal frame of the clock. The wire c is insulated from the metal frame of the clock. rIhe other battery-wire, b, connects with the spring 50, but is otherwise insulated from the frame of the clock.

52 54 is a detent, which engages with the ratchet-wheel l0 to prevent it turning back. This detent may be pressed against the ratchet-wheel 10 by the spring 50, bearing against the head of a screw, 51, in which case the detent must be insulated from the metal frame of the clock.

To use the clock, asuitable battery (not necessary to be shown) is employed to set the works in motion. The battery may be arranged in the same casing in which -the clockworks are contained, so that the clock forms an entirety.

As soon as the connections with the battery are established a current .is caused to flow through the electro magnet whenever the weight 37 ldraws its end ofthe armature lever down, and the electro-magnet then attracts the armature and lifts the weight; but as soon as the weight is lifted the parts 5() and 55 break contact, thus interrupting the current, whereupon the weight will fall, and thereby re-establish contact between the parts IOO 5() and 55, when a current is re-established and the Weight again raised. EVhenever the Weight descends, the larger pawl 38 will turn the ratchetwheel l0 one tooth. The pin 11 on the Wheel l0, being on the flexible arm 1l and bearing against it, turns the wheel 4. Thus the battery serves to supply the clock mechanism with the necessary power, which will enable the pendulum to remain in 1notion. The pendulum is shown in Fig. l, and is connected with the train of Wheels and with the eseapement in the ordinary manner. As the ratchet-wheel is provided with sixty teeth and revolved once in an hour, its action upon the arm 12 and wheel +L occurs sixty times per hour-that is, every minute-but the number of teeth of the ratchet-wheels may be varied without departing` from my invention. By the turning of the axis of the main Wheel 4 the minute-wheel 6, secured on the extended axis, will be revolved. This minute-Wheel meshes into the winding-up wheel l5, and thus this is set in motion. up the spring 1?*,aitz'zched to a stud.

The wheel lwiuds Il the spring is so tensioned that it possesses the power for the clock to strike twelve and twelve-thirty, it is su'fciently Wound up,and

will, as long as the elements are strong enough to raise the lever, continue to operate. The minute-wheel 6 has projecting pins 6*, which serve to raise the lever-arm 27 :51. This in turn raises the liftingarm 272, which is under the lever 30,1ii'ting that and also the angle-arm 3l. XVhen 3l is raised, the spring 17K is free to turn the Wheel 32, and the striking-Wheel 18, which causes the striking-Works to operate until 3l drops into another notch.

In an electric clock, the combination, substantially as described, ol' electro-magnet 44, armature-lever 33, contact-piece 39, spring 50, pawl 3S, detent 5l, and ratchet-wheel l0, all arranged to operate substantially as herein shown and described.

FERDINAND BAAUD'IAN. lVit-nesses:

FRITZ BERGER, Bossxnn'r. 

